Comment by rwyinuse

You don't need an "extinction event" to hurt coffee production so much that drinking it (especially Arabica) becomes an expensive luxury due to lack of supply. Crops that are grown only in particular parts of the world will suffer the most from localized unusual weather patterns, as there won't be production from elsewhere to compensate.

Also, it takes some time to move production elsewhere. And if climate change continues to get worse, you can't really trust any place to have a consistent climate.